Long time residents of Black Diamond, Judy and I love our community and the unique natural beauty and colorful history we have here. Join us in learning more about our history, local wildlife, must do hikes, conservation areas to explore and the opportunities and challenges faced by our community. Craig Goodwin

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12/13/2017

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Bill Kombol

I think the half-track dumptrucks in the 1935 photo carry a larger load than you suggest. Let's say the wheel base of the trucks is 6 feet meaning the box looks 7 feet wide. Using that as a reference, the box length is perhaps 8 feet with a height of say 3 feet. 7 x 8 x 3 = 168 cubic feet divided by 27 cu. ft. equals 6.2 cubic yards. Rock and gravel are typically 1.4 to 1.5 tons per cy, thus the carrying capacity of those trucks was probably in the 8 to 10 ton range.

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